This physics ball set contains twelve solid 25mm balls – two each of aluminum, brass, copper, steel, zinc, and wood. Physics balls can be used in many physics experiments as well as experimenting with volume and density.
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
This product consists of small balls, making it a choking hazard. Only use with adult supervision.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.